memory leak in crypto_create_tfm_node

syzbot Applied syzbot 5 participants 8 messages Oct 11, 2022 – Oct 19, 2022

Subsystems (3)

VFS Crypto API fscrypt: file system level encryption support

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syzbot

author syzbot

2022-10-11 20:46 UTC #0 lore raw

Hello,

syzbot found the following issue on:

HEAD commit:    4c86114194e6 Merge tag 'iomap-6.1-merge-1' of git://git.ke..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=104827bc880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=10f41fbb818af57a
dashboard link: https://syzkaller.appspot.com/bug?extid=104c2a89561289cec13e
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17a1d5fa880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12f77e34880000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/47a35ffaaa39/disk-4c861141.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/cc11d48eaf17/vmlinux-4c861141.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/c14465c5ddba/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by [email protected]

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

executing program
executing program
executing program

---
This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at [email protected].

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches

Eric Biggers

maintainer

2022-10-11 21:41 UTC #1 lore raw

PATCH 1/1 fscrypt: fix keyring memory leak on mount failure

From: Eric Biggers <[email protected]>

Commit d7e7b9af104c ("fscrypt: stop using keyrings subsystem for fscrypt_master_key") moved the keyring destruction from __put_super() to generic_shutdown_super() so that the filesystem's block device(s) are still available. Unfortunately, this causes a memory leak in the case where a mount is attempted with the test_dummy_encryption mount option, but the mount fails after the option has already been processed.

To fix this, attempt the keyring destruction in both places.

Reported-by [email protected]

Fixes d7e7b9af104c ("fscrypt: stop using keyrings subsystem for fscrypt_master_key")

Signed-off-by Eric Biggers <[email protected]>

---
 fs/crypto/keyring.c     | 17 +++++++++++------
 fs/super.c              |  3 ++-
 include/linux/fscrypt.h |  4 ++--
 3 files changed, 15 insertions(+), 9 deletions(-)

fs/crypto/keyring.c +11 -6

index 1cca09aa43f8b..2a24b1f0ae688 100644
@@ -205,14 +205,19 @@ static int allocate_filesystem_keyring(struct super_block *sb)
 }
 
 /*
- * This is called at unmount time to release all encryption keys that have been
- * added to the filesystem, along with the keyring that contains them.
+ * Release all encryption keys that have been added to the filesystem, along
+ * with the keyring that contains them.
  *
- * Note that besides clearing and freeing memory, this might need to evict keys
- * from the keyslots of an inline crypto engine.  Therefore, this must be called
- * while the filesystem's underlying block device(s) are still available.
+ * This is called at unmount time.  The filesystem's underlying block device(s)
+ * are still available at this time; this is important because after user file
+ * accesses have been allowed, this function may need to evict keys from the
+ * keyslots of an inline crypto engine, which requires the block device(s).
+ *
+ * This is also called when the super_block is being freed.  This is needed to
+ * avoid a memory leak if mounting fails after the "test_dummy_encryption"
+ * option was processed, as in that case the unmount-time call isn't made.
  */
-void fscrypt_sb_delete(struct super_block *sb)
+void fscrypt_destroy_keyring(struct super_block *sb)
 {
 	struct fscrypt_keyring *keyring = sb->s_master_keys;
 	size_t i;

fs/super.c +2 -1

index 6a82660e1adba..8d39e4f11cfa3 100644
@@ -291,6 +291,7 @@ static void __put_super(struct super_block *s)
 		WARN_ON(s->s_inode_lru.node);
 		WARN_ON(!list_empty(&s->s_mounts));
 		security_sb_free(s);
+		fscrypt_destroy_keyring(s);
 		put_user_ns(s->s_user_ns);
 		kfree(s->s_subtype);
 		call_rcu(&s->rcu, destroy_super_rcu);

@@ -479,7 +480,7 @@ void generic_shutdown_super(struct super_block *sb)
 		evict_inodes(sb);
 		/* only nonzero refcount inodes can have marks */
 		fsnotify_sb_delete(sb);
-		fscrypt_sb_delete(sb);
+		fscrypt_destroy_keyring(sb);
 		security_sb_delete(sb);
 
 		if (sb->s_dio_done_wq) {

include/linux/fscrypt.h +2 -2

index cad78b569c7ef..4f5f8a6512132 100644
@@ -307,7 +307,7 @@ fscrypt_free_dummy_policy(struct fscrypt_dummy_policy *dummy_policy)
 }
 
 /* keyring.c */
-void fscrypt_sb_delete(struct super_block *sb);
+void fscrypt_destroy_keyring(struct super_block *sb);
 int fscrypt_ioctl_add_key(struct file *filp, void __user *arg);
 int fscrypt_add_test_dummy_key(struct super_block *sb,
 			       const struct fscrypt_dummy_policy *dummy_policy);

@@ -521,7 +521,7 @@ fscrypt_free_dummy_policy(struct fscrypt_dummy_policy *dummy_policy)
 }
 
 /* keyring.c */
-static inline void fscrypt_sb_delete(struct super_block *sb)
+static inline void fscrypt_destroy_keyring(struct super_block *sb)
 {
 }

base-commit: 041bc24d867a2a577a06534d6d25e500b24a01ef

Signature · 1 line

2.37.3

Eric Biggers

maintainer Applied

2022-10-18 00:53 UTC #2 lore raw

Re: [PATCH] fscrypt: fix keyring memory leak on mount failure

Quoted 9 lines · Eric Biggers

From: Eric Biggers <[email protected]>
Commit d7e7b9af104c ("fscrypt: stop using keyrings subsystem for fscrypt_master_key") moved the keyring destruction from __put_super() to generic_shutdown_super() so that the filesystem's block device(s) are still available. Unfortunately, this causes a memory leak in the case where a mount is attempted with the test_dummy_encryption mount option, but the mount fails after the option has already been processed.

Quoted 5 lines

To fix this, attempt the keyring destruction in both places.
Reported-by [email protected]
Fixes d7e7b9af104c ("fscrypt: stop using keyrings subsystem for fscrypt_master_key")
Signed-off-by Eric Biggers <[email protected]>

Applied to fscrypt.git#for-stable for 6.1.

As usual, I'd greatly appreciate reviews though...

- Eric

Christian Brauner

maintainer Reviewed-by on v1 1/1

2022-10-19 12:01 UTC #3 lore raw

Re: [PATCH] fscrypt: fix keyring memory leak on mount failure

In reply to Eric Biggers

Quoted 9 lines · Eric Biggers

From: Eric Biggers <[email protected]>
Commit d7e7b9af104c ("fscrypt: stop using keyrings subsystem for fscrypt_master_key") moved the keyring destruction from __put_super() to generic_shutdown_super() so that the filesystem's block device(s) are still available. Unfortunately, this causes a memory leak in the case where a mount is attempted with the test_dummy_encryption mount option, but the mount fails after the option has already been processed.

Quoted 6 lines

To fix this, attempt the keyring destruction in both places.
Reported-by [email protected]
Fixes d7e7b9af104c ("fscrypt: stop using keyrings subsystem for fscrypt_master_key")
Signed-off-by Eric Biggers <[email protected]>
---

Looks good,

Reviewed-by Christian Brauner (Microsoft) <[email protected]>

Herbert Xu

maintainer

2022-10-12 09:23 UTC #4 lore raw

In reply to syzbot

Hi:

I presume this is a leak in fscrypt (or perhaps something at an even higher level).

Thanks,

Quoted 650 lines · syzbot

Hello,

syzbot found the following issue on:

HEAD commit:    4c86114194e6 Merge tag 'iomap-6.1-merge-1' of git://git.ke..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=104827bc880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=10f41fbb818af57a
dashboard link: https://syzkaller.appspot.com/bug?extid=104c2a89561289cec13e
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17a1d5fa880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12f77e34880000

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by [email protected]

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

executing program
executing program
executing program

---
This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at [email protected].

Signature · 3 lines

Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

Dmitry Vyukov

2022-10-12 10:26 UTC #5 lore raw

Quoted 5 lines · Herbert Xu

Hi:
I presume this is a leak in fscrypt (or perhaps something at an even higher level).

Eric sent this:

[PATCH] fscrypt: fix keyring memory leak on mount failure
https://lore.kernel.org/all/[email protected]/

Quoted 663 lines

Thanks,

Quoted 646 lines · syzbot

Hello,

syzbot found the following issue on:

HEAD commit:    4c86114194e6 Merge tag 'iomap-6.1-merge-1' of git://git.ke..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=104827bc880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=10f41fbb818af57a
dashboard link: https://syzkaller.appspot.com/bug?extid=104c2a89561289cec13e
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17a1d5fa880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12f77e34880000

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by [email protected]

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881024bd800 (size 512):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff  ..*.....h.......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810eb2e740 (size 32):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff  ................
    00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff  ........ .......
  backtrace:
    [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
    [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
    [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
    [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
    [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
    [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
    [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
    [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
    [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
    [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
    [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
    [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

BUG: memory leak
unreferenced object 0xffff88810a9a1800 (size 2048):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
    [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
    [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff88810a820800 (size 1024):
  comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
  hex dump (first 32 bytes):
    00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00  X...............
  backtrace:
    [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
    [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
    [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
    [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
    [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
    [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
    [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
    [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
    [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
    [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
    [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
    [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
    [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
    [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
    [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
    [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
    [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
    [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

executing program
executing program
executing program

---
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Quoted 4 lines

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches

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Email: Herbert Xu <[email protected]> Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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Herbert Xu

maintainer

2022-10-13 01:56 UTC #6 lore raw

Quoted 11 lines · Dmitry Vyukov

Quoted 5 lines · Herbert Xu
Hi:
I presume this is a leak in fscrypt (or perhaps something at an even higher level).
Eric sent this:
[PATCH] fscrypt: fix keyring memory leak on mount failure
https://lore.kernel.org/all/[email protected]/

Oh I missed that.

Thanks,

Signature · 3 lines

Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

Eric Biggers

maintainer

2022-10-13 05:59 UTC #7 lore raw

Quoted 8 lines · Herbert Xu

Quoted 7 lines · Dmitry Vyukov
Quoted 5 lines · Herbert Xu
Hi:
I presume this is a leak in fscrypt (or perhaps something at an even higher level).

Quoted 8 lines

Quoted 4 lines
Eric sent this:
[PATCH] fscrypt: fix keyring memory leak on mount failure
https://lore.kernel.org/all/[email protected]/
Oh I missed that.
Thanks,

Yes, and I used 'git format-patch --in-reply-to=$messageId' with the message ID of the syzbot email, so it should show up in this same thread.

- Eric